Home / 421,987.20-582,349.20-230,997.36

Finding the Fourth Proportional to 421,987.20, 582,349.20 and 230,997.36

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Solution

The fourth proportional to 421,987.20, 582,349.20 and 230,997.36 is: 318,780.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,987.20 : 582,349.20 = 230,997.36 : x
  2. Step 2: Convert to fraction form
    421,987.20/582,349.20 = 230,997.36/x
  3. Step 3: Cross multiply
    421,987.20x = 582,349.20 × 230,997.36
  4. Step 4: Simplify right side
    421,987.20x = 134,521,127,798.11
  5. Step 5: Solve for x
    x = 134,521,127,798.11/421,987.20
  6. Step 6: Final answer
    x = 318,780.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.